【单选题】the most typical and conventional activities, ideas or people
【简答题】【资料】 15 83 年,伽利略经测量发现悬挂的油灯摆动时具有等时性。如图所示,将密度较大的小球作为摆球,用质量不计、不可伸缩的细线悬挂于 O 点,组装成一个摆,在 θ < 5 °时,让摆球从 A 点静止释放后摆动,摆的周期(摆球往返一次的时间)只与摆长(摆球重心到悬挂点 O 的距离)有关。 【质疑 1 】小科认为:摆球质量越大,惯性也越大,所以相同条件下摆动会越慢,周期会越长。 【探究 1 】选...
【判断题】惯性过滤器和离心过滤器均利用了杂质具有较大质量的特性来进行分离,它们都可反复使用
【判断题】In respect of the colors and decorations, during both the Spring Festival and the Christmas season, red and gold are the most typical colors.
【判断题】All the traditional festivals are fixed, following lunar calendar and some of the most typical and influential ones might be traced back to thousands of years ago.
【判断题】心理的健康与不健康之间并没有一个绝对的界线
【简答题】_________________ are the most typical and popular folk handicraft in Russia.
【简答题】The most typical and true national holiday in the US is _____ _____.